1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff31e37a90d8d439feb7978832d9b2e434531dd9833b54268819de84b65b788. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/65a7951a-d03d-4cee-aaf9-a053bdeeba2b.json and https://artists.proofprofile.net/proofs/artist/65a7951a-d03d-4cee-aaf9-a053bdeeba2b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3556602480c98c8d1683fd8a04bca5aad6d1d90ab9506458888ffb6e9a2e303e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLS2119072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143c4309a2d45ee68b8be02020c2387aebe4356068274869ffa7febf1a8f5b3f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUA582200162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d613db249c716ddb2f507cdfb4a9ef7c4d690785360750e68ae78955ec5d5e. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUA322200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2012718c9a1ee3de5577011111322cfa4524756d0a856bb19e03c7f9eda0f1e9. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUA322201432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54008ce63afcd6fd49d5afc3323f0a1e24115d67df3dc3db364cdd24db5dbf60. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUA322202456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080990e7c409c515317c82ff1ad57109242370376d8bf13455d74ae0c1731bca. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUA322204714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc148d749a593a862b473e7ded45ead17cbc66795574b7283b07098321262f78c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUAGV2304075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67deab7096e3735f770e26a33ba9aa841df0320e4439897d77b30670ae2618fc. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUAGV2303818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c26ac77ea995a660f3dab76f619ca99a4c0b4bed3b650ff151bbf03549ef69. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUAGV2304076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3d6f32aeca03daf45af61f22c4ba25f4f16080b8ccbea64ae021cf8d485e1c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUAGV2303819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3fe2feb30db2e4b6f9cc62f82ee98c250f6d1a2e929ca6ad0e14adec3e9400. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUAGV2303594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x189e9ed739d3e7e366cbac4d9c017ad9da3333d5c5fa46ca88ef720cfa272410. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUAGV2303595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bcdc504ba20fe7addc5a6a87d15ad409470f205505b979bd90bc9157511ef7b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUAGV2304077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf56f0de188bba6754e2b70fc5dacc5ea05f9deb1be1ec01af816872b332adba5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUAGV2304080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5373ba3cb30a33a563b5361f36703202fe13921007bbf919cf24eabb2cd8d084. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:48:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUAGV2403998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5716aa97972d86c324e8a7d8f2853b52ce359652e2343ee872f9254ede343334. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUAGV2405578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3ff7cc70e9fcf1dce597ef24eaf0b754460f8fe619e07f1343cbec9b9551c5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUAGV2407652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db8182914559227b2608735c04bdba8bfa1bb72ecdae0d85ba5fd9bb07d6de8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUAGV2410236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d1fc4c3dcd0e6f60d79910482c9a01fc17f94c84105545faf4309fd01b550c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHZ52193684.